While doing research for another thread I ran across the following article. It is about a rumored Gear s4 that might be announced this fall with the note 9. The article has some interesting rumors from batteries being located in the band to a much smaller watch.

all I got to say if it is true, bout time

The source says the device has a model number of SM-R800, which would follow on from the Gear S3 Frontier and Classic that were codenamed SM-R770 and SM-R760. The Gear Sport had the number SM-R600, which would suggest the device Samsung is working on now will be called the Gear S4.